AFAIK things are fine now. It recovered and I never heard a definitive scientific explanation of what caused it. I think it has happened before.

We will be going in July and it looked like we'd be forced to wait until later into our trip to have perfect moon conditions (which left us less time to pick our weather on the way back). mooncalandar shows when the best times to go are and it introduced me to the idea that the time of moonrise is also important - you can do an early trip before the moon rises. I hadn't thought about thaaaaat!